f2fs_io: support xattr(large_folio)

[Script]
dd if=/dev/zero of=/mnt/test/test bs=1M count=1024
f2fs_io setxattr user.fadvise 1 /mnt/test/test
chmod 0400 /mnt/test/test
sync -f /mnt/test/test
echo 3 > /proc/sys/vm/drop_caches
f2fs_io read 1 0 100000 mmap 0 1 /mnt/test/test
f2fs_io get_fadvise /mnt/test/test

[Output]
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.520712 s, 2.1 GB/s
setxattr /mnt/test/test CREATE: name: user.fadvise, value: 1: ret=0
Read 409600000 bytes total_time = 106757 us, BW = 4286 MB/s, IO time = 95577 us, mlock time = 11173 us, print 1 bytes:
00000000 : 00
fadvise=0x1, advise_type: largefolio

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Author: Jaegeuk Kim

tools/f2fs_io/f2fs_io.c

@@ -2084,6 +2084,7 @@ static void do_setxattr(int argc, char **argv, const struct cmd_desc *cmd)
 	int ret, len;
 	char *value;
 	unsigned char tmp;
+	unsigned int tmp_u;
 
 	if (argc != 4) {
 		fputs("Excess arguments\n\n", stderr);
@@ -2095,6 +2096,10 @@ static void do_setxattr(int argc, char **argv, const struct cmd_desc *cmd)
 		tmp = strtoul(argv[2], NULL, 0);
 		value = (char *)&tmp;
 		len = 1;
+	} else if (!strcmp(argv[1], F2FS_USER_FADVISE_NAME)) {
+		tmp_u = strtoul(argv[2], NULL, 0);
+		value = (char *)&tmp_u;
+		len = sizeof(unsigned int);
 	} else {
 		value = argv[2];
 		len = strlen(value);
@@ -2217,6 +2222,32 @@ static void do_get_advise(int argc, char **argv, const struct cmd_desc *cmd)
 	printf("\n");
 }
 
+#define get_fadvise_desc "get_fadvise"
+#define get_fadvise_help "f2fs_io get_fadvise [file_path]\n\n"
+
+static void do_get_fadvise(int argc, char **argv, const struct cmd_desc *cmd)
+{
+	int ret;
+	unsigned int value;
+
+	if (argc != 2) {
+		fputs("Excess arguments\n\n", stderr);
+		fputs(cmd->cmd_help, stderr);
+		exit(1);
+	}
+
+	ret = getxattr(argv[1], F2FS_USER_FADVISE_NAME, &value, sizeof(value));
+	if (ret != sizeof(value)) {
+		perror("getxattr");
+		exit(1);
+	}
+
+	printf("fadvise=0x%x, advise_type: ", value);
+	if (value & (1 << F2FS_XATTR_FADV_LARGEFOLIO))
+		printf("largefolio");
+	printf("\n");
+}
+
 #define ftruncate_desc "ftruncate a file"
 #define ftruncate_help					\
 "f2fs_io ftruncate [length] [file_path]\n\n"	\
@@ -2626,6 +2657,7 @@ const struct cmd_desc cmd_list[] = {
 	CMD(removexattr),
 	CMD(lseek),
 	CMD(get_advise),
+	CMD(get_fadvise),
 	CMD(ioprio),
 	CMD(ftruncate),
 	CMD(test_create_perf),

tools/f2fs_io/f2fs_io.h

@@ -186,6 +186,7 @@ struct fsverity_enable_arg {
 #define F2FS_IOC_FSSETXATTR		FS_IOC_FSSETXATTR
 
 #define F2FS_SYSTEM_ADVISE_NAME	"system.advise"
+#define F2FS_USER_FADVISE_NAME "user.fadvise"
 #define FADVISE_COLD_BIT	0x01
 #define FADVISE_LOST_PINO_BIT	0x02
 #define FADVISE_ENCRYPT_BIT	0x04
@@ -195,6 +196,11 @@ struct fsverity_enable_arg {
 #define FADVISE_VERITY_BIT	0x40
 #define FADVISE_TRUNC_BIT	0x80
 
+/* used for F2FS_USER_FADVISE_NAME */
+enum {
+	F2FS_XATTR_FADV_LARGEFOLIO,
+};
+
 /* used for F2FS_IOC_IO_PRIO */
 enum {
 	F2FS_IOPRIO_WRITE = 1,  /* high write priority */